Duskmourn: House of Horror

Bottomless Pool // Locker Room | Enchantment // Enchantment | Room // Room | (You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.) When you unlock this door, return up to one target creature to its owner's hand. // (You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.) Whenever one or more creatures you control deal combat damage to a player, draw a card. | Diana Franco

Central Elevator // Promising Stairs | Enchantment // Enchantment | Room // Room | (You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.) When you unlock this door, search your library for a Room card that doesn't have the same name as a Room you control, reveal it, put it into your hand, then shuffle. // (You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.) At the beginning of your upkeep, surveil 1. You win the game if there are eight or more different names among unlocked doors of Rooms you control. | Cristi Balanescu

Clammy Prowler | Enchantment Creature | Horror | Whenever Clammy Prowler attacks, another target attacking creature can't be blocked this turn. | John Tedrick

Duskmourn's Domination | Enchantment | Aura | Enchant creature You control enchanted creature. Enchanted creature gets -3/-0 and loses all abilities. | Eli Minaya

Enduring Curiosity | Enchantment Creature | Cat Glimmer | Flash Whenever a creature you control deals combat damage to a player, draw a card. When Enduring Curiosity dies, if it was a creature, return it to the battlefield under its owner's control. It's an enchantment. (It's not a creature.) | Julie Dillon

Fear of Failed Tests | Enchantment Creature | Nightmare | Whenever Fear of Failed Tests deals combat damage to a player, draw that many cards. | Jana Heidersdorf

Fear of Falling | Enchantment Creature | Nightmare | Flying Whenever Fear of Falling attacks, target creature defending player controls gets -2/-0 and loses flying until your next turn. | Maxime Minard

Fear of Impostors | Enchantment Creature | Nightmare | Flash When Fear of Impostors enters, counter target spell. Its controller manifests dread. (That player looks at the top two cards of their library, then puts one onto the battlefield face down as a 2/2 creature and the other into their graveyard. If it's a creature card, it can be turned face up any time for its mana cost.) | David Szabo

Fear of Isolation | Enchantment Creature | Nightmare | As an additional cost to cast this spell, return a permanent you control to its owner's hand. Flying | Irina Nordsol

Leyline of Transformation | Enchantment | | If Leyline of Transformation is in your opening hand, you may begin the game with it on the battlefield. As Leyline of Transformation enters, choose a creature type. Creatures you control are the chosen type in addition to their other types. The same is true for creature spells you control and creature cards you own that aren't on the battlefield. | Sergey Glushakov

Meat Locker // Drowned Diner | Enchantment // Enchantment | Room // Room | (You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.) When you unlock this door, tap up to one target creature and put two stun counters on it. (If a permanent with a stun counter would become untapped, remove one from it instead.) // (You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.) When you unlock this door, draw three cards, then discard a card. | Sergey Glushakov

The Mindskinner | Legendary Enchantment Creature | Nightmare | The Mindskinner can't be blocked. If a source you control would deal damage to an opponent, prevent that damage and each opponent mills that many cards. | Abz J Harding

Mirror Room // Fractured Realm | Enchantment // Enchantment | Room // Room | (You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.) When you unlock this door, create a token that's a copy of target creature you control, except it's a Reflection in addition to its other creature types. // (You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.) If a triggered ability of a permanent you control triggers, that ability triggers an additional time. | Helge C. Balzer

Overlord of the Floodpits | Enchantment Creature | Avatar Horror | Impending 4—{1}{U}{U} (If you cast this spell for its impending cost, it enters with four time counters and isn't a creature until the last is removed. At the beginning of your end step, remove a time counter from it.) Flying Whenever Overlord of the Floodpits enters or attacks, draw two cards, then discard a card. | Abz J Harding

Silent Hallcreeper | Enchantment Creature | Horror | Silent Hallcreeper can't be blocked. Whenever Silent Hallcreeper deals combat damage to a player, choose one that hasn't been chosen — • Put two +1/+1 counters on Silent Hallcreeper. • Draw a card. • Silent Hallcreeper becomes a copy of another target creature you control. | Joshua Raphael

Stay Hidden, Stay Silent | Enchantment | Aura | Enchant creature When Stay Hidden, Stay Silent enters, tap enchanted creature. Enchanted creature doesn't untap during its controller's untap step. {4}{U}{U}: Shuffle enchanted creature into its owner's library, then manifest dread. Activate only as a sorcery. | Josu Hernaiz

The Tale of Tamiyo | Legendary Enchantment | Saga | (As this Saga enters and after your draw step, add a lore counter. Sacrifice after IV.) I, II, III — Mill two cards. If two cards that share a card type were milled this way, draw a card and repeat this process. IV — Exile any number of target instant, sorcery, and/or Tamiyo planeswalker cards from your graveyard. Copy them. You may cast any number of the copies. | Anna Pavleeva

Unable to Scream | Enchantment | Aura | Enchant creature Enchanted creature loses all abilities and is a Toy artifact creature with base power and toughness 0/2 in addition to its other types. As long as enchanted creature is face down, it can't be turned face up. | Fariba Khamseh

Underwater Tunnel // Slimy Aquarium | Enchantment // Enchantment | Room // Room | (You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.) When you unlock this door, surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.) // (You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.) When you unlock this door, manifest dread, then put a +1/+1 counter on that creature. | Titus Lunter

Leyline of Mutation | Enchantment | | If Leyline of Mutation is in your opening hand, you may begin the game with it on the battlefield. You may pay {W}{U}{B}{R}{G} rather than pay the mana cost for spells that you cast. | Sergey Glushakov

Inquisitive Glimmer | Enchantment Creature | Fox Glimmer | Enchantment spells you cast cost {1} less to cast. Unlock costs you pay cost {1} less. | Julie Dillon

Restricted Office // Lecture Hall | Enchantment // Enchantment | Room // Room | (You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.) When you unlock this door, destroy all creatures with power 3 or greater. // (You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.) Other permanents you control have hexproof. | Antonio José Manzanedo

Fear of Infinity | Enchantment Creature | Nightmare | Flying, lifelink Fear of Infinity can't block. Eerie — Whenever an enchantment you control enters and whenever you fully unlock a Room, you may return Fear of Infinity from your graveyard to your hand. | Fernando Falcone

Roaring Furnace // Steaming Sauna | Enchantment // Enchantment | Room // Room | (You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.) When you unlock this door, this Room deals damage equal to the number of cards in your hand to target creature an opponent controls. // (You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.) You have no maximum hand size. At the beginning of your end step, draw a card. | Miklós Ligeti

Smoky Lounge // Misty Salon | Enchantment // Enchantment | Room // Room | (You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.) At the beginning of your first main phase, add {R}{R}. Spend this mana only to cast Room spells and unlock doors. // (You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.) When you unlock this door, create an X/X blue Spirit creature token with flying, where X is the number of unlocked doors among Rooms you control. | Marco Gorlei

Growing Dread | Enchantment | | Flash When Growing Dread enters, manifest dread. (Look at the top two cards of your library. Put one onto the battlefield face down as a 2/2 creature and the other into your graveyard. Turn it face up any time for its mana cost if it's a creature card.) Whenever you turn a permanent face up, put a +1/+1 counter on it. | Maxime Minard